entrypoint: remove GO_CEPH_TEST_REQUIRE_MOUNT environment var
entrypoint: remove GO_CEPH_TEST_REQUIRE_MOUNT environment var

This env var is no longer used, we can drop it from the entrypoint
script.

Signed-off-by: John Mulligan <eda8ad33169deab44f9fe65847f99e368da6c91b@redhat.com>

ceph/go-ceph,ceph/go-ceph,ceph/go-ceph